By December 1914, World War I had claimed the lives of nearly 1 million people (as many as 14 million would die in the war), but for one day -- Christmas Day -- a truce broke out between British and German soldiers.

As the story goes, and it's unknown how much is truth and what parts may be exaggerated, British soldiers hiding in their trenches began to hear a familiar tune coming from the German trenches nearby -- it was "Silent Night," and it began a day of unauthorized fraternization between enemies. There were no bullets shot or bombs exploding that day during the Christmas Truce, just war-ravaged men shaking hands, sharing cigarettes, and kicking a can around on the Western Front.